Add partial and not fully tested support for raster indexing from the QuadIndex.
Merge branch 'master' of https://github.com/PDAL/PDAL into indexing
add fvisibility-inlines-hidden when compiling with PCL support
Merge pull request #479 from chambbj/issues/478-bus-error

add fvisibility-inlines-hidden when compiling with PCL support
Tweak rastering index.
Merge branch 'master' into indexing